BANK NOTE HANDLING APPARATUS

Abstract: A bank note (23) which has passed in a deformed state through a bending unit (28) provided between a bank note discriminating unit (24) and a stacker (25) restores thereafter its initial planar shape owing to its own resiliency to form surface portions crossing block edges (31). Even when a lift thread fixed to the bank note (23) is drawn after the bank note (23) has passed through the bending unit (28), it becomes impossible that the bank note (23) returns to a bank note transfer passage (27), so that the stealing of the bank note is prevented.

Description: The present invention relates, in general, to a bill handling apparatus, and more particularly, to a bill handling apparatus to prevent unauthorized extraction of bills which have been received in a stacker of the apparatus. For example, Japanese Utility Model Disclosure 63-89181 discloses a bill-extraction-proof device in a bill validator. As shown in Figs. 18 and 19, in the bill-extraction-proof device, a bill is inserted from an inlet 7 into the space between a pair of side walls 2 and 3 of a frame 1, and is then carried by belts 11 and rollers 12 to further pass through the space between slant protrusions 9 and 10 formed on the frame 1 and a plate 5. Although the bill is slightly deformed when the bill passes through the slant protrusions 9 and 10, the deformation does not provide any obstacle in carrying the bill. If a person tries to withdraw the bill without authorization from the inlet 7 by pulling a string such as a fishing line connected to the bill after it passes through an outlet 8, the extraction is prevented due to engagement of the bill with the slant protrusions 9 and 10. Disclosed in Japanese Utility Model Disclosure 4-36677 is another bill-extraction-proof device in which a stopper is rotatably provided to extend into the passageway of a bill validator and is rotated away from the passageway according to a control signal generated by the bill validator. This bill-extraction-proof device is advantageous in that extraction of bill is effectively prevented since the stopper is rotated away from the passageway only when a valid bill passes through the validator. However, the bill-extraction-proof device shown in Figs. 18 and 19 is disadvantageous in that the slant protrusions 9 and 10 can not have their long extension length which may obstruct transportation of the bill by belts 11 due to engagement of the bill and long slant protrusions. Therefore, unauthorized extraction of the bill can be carried out by stongly pulling a fishing line connected to the bill or by pulling the line after inserting a thin flexible plate into the passageway. Also, Japanese Utility Model Disclosure 4-36677 demonstrates an extraction-proof device in which, however, unauthorized extraction may be made by successively inserting two bills. US-A-4662626 describes a paper document picket for securing and stacking sorted documents from a high speed reader sorter. The device receives documents through a cupping assembly designed to bend a document being conveyed into the stacker with the document arriving from a so-called reader sorter. The device utilises a lead edge guide leading to a pair of centrally disposed nip roller, and a pair of laterally spaced guide arms which are used to contact opposite sides of the document and bend or cup the document as its centre position is received between the nip rollers. GB-A-2224721 describes a device for handling the likes of a money bill which includes a deforming or reconfiguring assembly having a pair of rollers contacting respective belts to move a bill disposed there between and a guide assembly defining a first curved path. The lower roller carries a pair of spaced annular runs one at each axial end of the roller which project across the ticket path on each side of the guide belts and on each side of the other roller. The rims act to deform the outer areas of the bill barring between them with its central area gripped between the two belts. Therefore, an object of the present invention is to provide a bill handling apparatus with its simple construction strongly resistible against any unauthorized extraction of the bill. Accordingly the present invention provides a bill handling apparatus comprising a casing provided with an inlet; validator means for judging authenticity of a bill inserted from said inlet of said casing; stacker means for accumulating the bill considered authentic by said validator means; conveyor means for transporting the bill inserted from the inlet of said casing through said validator means to said stacker means; and bending means provided between said validator means and said stacker means for gradually bending the bill transported from said validator means by said conveyor means; wherein the bill is transported along a passageway defined between a guide plate and a support plate spaced from said guide plate; and characterised in that said bending means comprises:- at least a pair of guide portions integrally formed with said guide plate in both sides of said conveyor means, each guide portion extending downward from said guide plate below a bottom surface of the support plate wherein said guide portions have slant surfaces for guiding side edges of the bill toward a height different from the central portion of the bill, and wherein blocking edges are formed at the rear end of said guide portions and extending to a position different from the passageway. said conveyor means arranged to transport the bill over said guide portions so that both sides of said bill are deformed below the bottom surface of the support plate. The side edges of the bill are in parallel to a longitudinal central line of the bill. The bill recovers the initial flat shape due to its own elasticity to form a face intersecting the blocking edges after passing through the guide portions in its deformed shape. At least a notch is formed in each slant surface or blocking edge of the guide. A plurality of pairs of the guide portions are formed into a stepped shape at both side portions of the conveyor means. The bending angle of the bill is in a range of 30 through 170 degrees and preferably in a range of 90 through 150 degrees. The bending means bends the bill into a curved shape with at least a small radius without any crease. In an embodiment of the invention, the bending means includes central guide means for guiding the lengthwise central portion of the bill, guide portions for guiding side edges of the bill toward a height different from the central portion of the bill, and blocking edges formed at the rear end of the guide portions and extending to a position different from the passageway. The guide portions and the blocking edges are integrally formed with a guide plate which defines the passageway, and the blocking edges are formed into an inverted V-shape relative to the central guide means. The central guide means and blocking edges are protruded from the casing toward the stacker means so that the bill is deformed into an inverted V-shape by the bending means with transportation by the conveyor means. The central guide means has a belt and pulleys for guiding the bill. The bill carried by the validator means falls in the stacker means due to its own weight. After having been carried through the validator means by the conveyor, the bill is extremely deformed by the bending means relative to the passageway when it passes through the bending means toward the stacker means, and is then forwarded to the stacker means. Subsequently, the bill recovers its initial flat shape due to its own elasticity. Therefore, after the bill is received in the stacker means, an attempt of pulling a string or the like attached to the bill fails to withdraw the bill because the blocking edges inhibit returning movement of the bill due to contact of the blocking edges and bill to thereby prevent any unauthorized extraction of the bill. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view of a bill handling apparatus according to the present invention applied to validator means. Fig. 2 is a rear view of Fig. 1. Fig. 3 is a perspective view of Fig. 1 with a casing removed. Fig. 4 is a rear view showing another embodiment of the present invention. Fig. 5 is a perspective view of Fig. 4 with a casing removed. Fig. 6 is a side view showing an embodiment of guide portions according to the present invention. Fig. 7 is a side view showing another embodiment of guide portions according to the present invention. Fig. 8 is a sectional view showing a third embodiment according to the present invention. Fig. 9 is a rear view of Fig. 8. Fig. 10 is a top view of Fig. 8 with the validator means removed. Fig. 11 is a front view of Fig. 8. Fig. 12 is a top view of Fig. 8. Fig. 13 is a side view of Fig. 8. Fig. 14 is a top view of a guide plate. Fig. 15 is a side view of the guide plate. Fig. 16 is a front view of the guide plate. Fig. 17 is a side view of guide portions. Fig. 18 is a perspective view of a conventional validator. Fig. 19 is a side view of the conventional validator. Now, embodiments of the bill handling apparatus according to the present invention will be described referring to Figs. 1 through 17. As shown in Fig. 1 the bill handling apparatus 20 comprises a casing 21 formed with an inlet 22, validator means 24 for judging authenticity of a bill 23 which is inserted from the inlet 22 of the casing 21, stacker means 25 for accumulating the bill 23 considered authentic by the validator means 24, and a conveyor 26 for carrying the bill inserted from the inlet 22 of the casing 21 through the validator means 24 toward the stacker means 25. The validator 24 has a magnetic detector, optical detectors and optical dimensions measuring devices not shown because well known by for example Japanese Utility Model Disclosure No. 4-36677. The box-shaped stacker means 25 is disposed adjacent to the rear portion of the validator means 24 so that the bill 23 discharged from the valisator means 24 falls in the stacker means 25 due to its own weight. The conveyor 26 includes a belt-pulley driving device (not shown) provided with three pairs of pulleys 33-35 to drive a belt 42, and rollers 36-38 respectively arranged opposite to the pulleys 33-35. The belt 42 is wound around the pulleys 33-35, 40 and 41. As shown in Fig. 2, the pulleys 35 are supported by shafts 51 which are attached to frames 50 secured to the casing 21. The bill 23 is carried along a passageway 27 in the condition of the lengthwise central portion 23a of the bill 23 sandwiched between the belt 42 and the rollers 36-38. Bending means 28 is provided at the rear end of the conveyor 26 between the validator means 24 and the stacker means 25. As shown in Fig. 3, the bending means 28 is integrally formed with a guide plate 32. The passageway 27 is defined between the guide plate 32 and a support plate 16. The bending means has a pair of guide portions 29 which are formed in triangle to project from the guide plate 32. A pair of the guide portions 29 are formed in both sides of the conveyor 26. An inner end 16a of the support plate terminates before the guide portions 29 which extend downwards from the guide plate 32 below a bottom surface 16b of the support plate 16. The guide plate 32 is formed into one piece integrally with the bending means 28 from plastic materials such as polyacetal, ABS, polyamide (Nylon) and polycarbonate to provid an upper wall of the passageway 27 of the conveyor 26. The guide plate 32 is bent upward at the front and rear portions and formed with pairs of openings 46-48 to receive the rollers 36-38 respectively. Each guide portion 29 has a slant surface 30 for directing side edges 23b of the bill 23 downwardly into the curved condition so that the side edges 23b in parallel to the lengthwise central portion 23a of the bill 23 reach a height different from the level of the central portion 23a of the bill 23; and a blocking edge 31 provided at the rear ends of the guide portions 29 to extend downwardly from the passageway 27. With transportation of the bill 23 by the conveyor 26, the sides edges 23b are extremely deformed away from the passageway 27 so that a desirable angle of the slant surfaces 30 for guiding the side edges 23b of the bill 23 is in a range of 10 through 45 degrees and the blocking edges 31 extend downward from the guide plate 32. Provided in parallel to the bending means 28 are bent levers 43 which are rotated when the bill 23 passes therethrough to generate a bill-reception signal by a bend-sensor not shown. The box-shaped stacker means 25 is provided adjacent to the rear portion of the validator means 24, and the conveyor 26 extends over the stacker means 25 out of the casing 21 so that the bill 23 discharged from the validator 24, falls in the stacker means 25 due to its own weight. Then, the bill 23 recovers it initial flat shape due to its own elasticity to form a face which intersects the blocking edges 31. After insertion from the inlet 22, the bill 23 is carried by the conveyor 26 through the validator means 24 to the stacker means 25 via the bending means 28 in which the bill 23 is gradually and extremely bent by the guide portions 29 into an inverted-V shape relative to the passageway 27 and then is carried to the stacker means 25. The bill 23 is deformed by the bending means 28 into the curved shape at least with a small radius without creases or folds and is discharged from the validator means 24. The bent angle  of the bill 23 is in a range of 30 to 170 degrees, preferably in a range of 90 through 150 degrees. After that, the bill recovers its initial flat shape. Therefore, it is impossible to get the bill 23 back to the passageway 27 by pulling a string or the like attached to the bill 23 because of contact of the bill 23 with the blocking edges 31 thereby preventing any unauthorized extraction of the bill 23. In addition, due to the molding manufacture of the guide plate 32 and the guide portions 29 into a unit from plastic resin, it is easy to make the bending means 28, reducing the number of parts, saving cost in manufacture and realizing weight reduction of the apparatus. The embodiment of the present invention shown in Figs. 1 and 2 may be varied as shown in Figs. 4 and 5. Specifically, as shown in Figs. 4 and 5, several pairs of guide portions 29 can be formed into stepped shape in both sides of the conveyor 26. As shown in Fig. 6, a notch 30a formed in each slant surface 30 serves to prevent an unauthorized extraction not only after the bill 23 is maintained in the stacker means 25, but also while the bill 23 is passing through the bending means 28. The notches 30a may be formed on the blocking edges 31. As an alternative shown in Fig. 7, without the notches 30a on the guide portions 29, a plurality of the guide portions 29 may be arranged in the shifted positions along the travel direction of the bill 23. The conveyor 26 may comprise a plurality of pulleys and belts. In the foregoing example, the upper wall of the passageway 27 in the conveyor 26 is formed by the guide plate 32, however, instead, a bottom wall of the passageway 27 may be formed to bend the bill 23 into V-shape. Still another embodiment of the present invention is shown in Figs. 8 to 17. As shown in Figs. 8 and 9, bending means 28 is provided at the rear end of a conveyor 26 between validator means 24 and stacker means 25. The bending means 28 includes a central guide means 39 for guiding the movement of the lengthwise central portion 23a of the bill 23, guide portions 29 for guiding the side edges 23b of the bill 23 in parallel to the central portion 23a of the bill 23 to the height different from the central portion 23a of the bill 23, and blocking edges 31 at the rear ends of the guide portions 29 and extending in directions different from that of the passageway 27 of the central guide means 39. The central guide means 39 has a pulley 35 and a roller 38. The blocking edges 31 of Fig. 9 extend downwardly so that the bill 23 is carried into an inverted V-shape. As shown in Figs. 14 to 16, a guide plate 32 which provides the upper wall of the passageway 27, comprises a main portion 45 of the guide plate 32, a front wall 49 bent upward at the front portion of the main portion 45, guide portions 29 bent downwardly at the rear portion, and openings 47 and 48 to receive rollers 36 and 37 respectively. As shown in Fig. 17, each guide portion 29 is inclined at an angle of about 45 degrees and the blocking edge 31 is formed at the edge of the guide portion 29. The guide portions 29 and the blocking edges 31 are formed integrally with the metallic main portion 45 of the guide plate 32 and, as shown in Fig. 9, the blocking edges 31 are formed into an inverted-V shape relative to the central guide means 39. The central guide means 39 and the blocking edges 31 extend over the stacker means 25 out of the casing 21 so that the bill 23 is deformed into an inverted-V shape by the bending means 28 with transportation by the conveyor 26. Supplied from the validator means 24 is the bill 23 which then passes through the guide portions 29 in a deformed condition and falls in the stacker means 25 due to its own weight. After that, the bill 23 recovers its initial flat shape due to its own elasticity to form a face intersecting the blocking edges 31. ' In the structure described above, the bill 23 passes through the validator means 24 and the bending means 28 by the conveyor 26 and is then conveyed to the stacker means 25. When passing through the bending means 28, the bill 23 is extremely deformed by the guide portions 29 and the central guide means 39 located at substantially the same height as the passageway 27 and then discharged in the stacker means 25. As a result, the bill 23 recovers its initial flat shape due to its own elasticity. Therefore, it is impossible to pull back the bill 23 to the passageway 27 by withdrawing the string attached to the bill 23 because of contact of the bill 23 with the blocking edges 31 or the pulley 35, thus preventing any unauthorized extraction of the bill 23. The mode of the present invention shown in Figs. 8 and 9 may be varied. Fig. 9 shows that the blocking edges 31 extend downward to convey the bill in an inverted V-shape, but otherwise, bending means may be designed to have upwardly bent rear portion of the guide plate which forms the lower wall of the passageway 27 so as to carry the bill in a V-shape. As described above, the present invention makes impossible any unauthorized extraction of a bill out of a bill handling apparatus to firmly prevent the bill handling apparatus from unauthorized access.

Claims: A bill handling apparatus comprising a casing (21) provided with an inlet (22); validator means (24) for judging authenticity of a bill (23) inserted from said inlet (22) of said casing (21); stacker means (25) for accumulating the bill (23) considered authentic by said validator means (24); conveyor means (26) for transporting the bill (23) inserted from the inlet (22) of said casing (21) through said validator means (24) to said stacker means (25); and bending means (28) provided between said validator means (24) and said stacker means (25) for gradually bending the bill (23) transported from said validator means (24) by said conveyor means (26); wherein the bill (23) is transported along a passageway (27) defined between a guide plate (32) and a support plate (16) spaced from said guide plate (32); and characterised in that said bending means (28) comprises:- at least a pair of guide portions (29) integrally formed with said guide plate (32) in both sides of said conveyor means (26), each guide portion (29) extending downward from said guide plate (32) below a bottom surface (16b) of the support plate (16) wherein said guide portions (29) have slant surfaces (30) for guiding side edges of the bill (23) toward a height different from the central portion of the bill (23), and wherein blocking edges (31) are formed at the rear end of said guide portions (29) and extend to a position different from the passageway (27); said conveyor means (26) arranged to transport the bill (23) over said guide portions (29) so that both sides of said bill (23) are deformed below the bottom surface (16b) of the support plate (16). A bill handling apparatus as claimed in claim 1, wherein said side edges of the bill (23) are in parallel to a longitudinal centre line of the bill (23). A bill handling apparatus as claimed in claim 1 or 2, wherein the bill (23) recovers the initial flat shape due to its own elasticity to form a face intersecting said blocking edges after passing through said guide portions (29) in its deformed shape. A bill handling apparatus as claimed in claim 1, 2 or 3, wherein at least a notch (30a) is formed in each slant surface (30) of said guide portions (29). A bill handling apparatus as claimed in anyone of claims 1 to 4 in which at least a notch is formed in each blocking edge (32) of said guide portions (29). A bill handling apparatus as claimed in any one of the preceding claims, wherein a plurality of pairs of said guide portions (29) are formed into a stepped shape at both side portions of said conveyor means (26). A bill handling apparatus as claimed in any one of the preceding claims, wherein the bending angle of the bill (23) is in a range of 30 through 170 degrees. A bill handling apparatus as claimed in any one of the preceding claims, wherein the bending angle of the bill (23) is in a range of 90 through 150 degrees. A bill handling apparatus as claimed in any one of the preceding claims, wherein said bending means (28) bends the bill (23) into a curved state with a small radius without any crease. A bill handling apparatus as claimed in any one of the preceding claims, further comprising central guide means (39) which has a belt (42) and pulleys (35) for guiding the bill (23). A bill handling apparatus as claimed in any one of the preceding claims wherein the bill (23) carried by said validator means (24) falls in said stacker means (25) due to its own weight. A bill handling apparatus as claimed in any one of the preceding claims wherein a lever (43) is attached for rotation upon contact with a central portion of said bill (23) which passes through said guide portions (29). A bill handling apparatus as claimed in any one of the preceding claims wherein a plurality of pairs of said guide portions (29) of different heights are formed in both sides of said guide plate (32). A bill handling apparatus as claimed in any one of claims 10 to 13 wherein a plurality of said guide portions (29) are formed in longitudinally shifted positions. A bill handling apparatus as claimed in any one of the preceding claims wherein said conveyor means (26) comprises at least a pair of pulleys (35, 38) and extends outwardly of said guide portions (29) for drawing the bill (23) from outside of said guide portions (29) to transport the bill (23) getting over said guide portions (29).

Inventors: IZAWA HIKARU, IZAWA, HIKARU, IZAWA, HIKARU, C/O SAGAMIHARA ENGINEERING DIVISION
Applicants: NIPPON KINSEN KIKAI KK, JAPAN CASH MACHINE CO., LTD.
Application year: 1994
Main classification: G07D7
IPC codes: G07F7, G07D7